Leopold l



. (N o Model.)

- L, L. RBMAGLE.

' MIGROMETER GA'LI'PERS.

No. 288,736. PatentedNQVpZO; 1883.

nyz.

WITNESSES INVENTOR ATTORNEYS.

UNITED STATES,

PATENT ()FFICE.

LEOPOLD L. BEMAGLE, or NEW YORK, N. Y.

MICRO M ETER-CALIPERS.

SPECIFICATION forming part of Letters Patent No. 288,736, dated November 20, 1883.

Application filed May 16, 1883. (N0 model.)

To all whom it may congern:

Be it known that I, LEoPoLD L. REMAOLE, of

the city, county, and State of New York, have inventedanewandImprovedMicrometer-Oalipers, of which the following is a full, clear, and exact description.

The object of my invention is to provide a new and improved micrometer-calipers,which can be folded very compactly, and which can be used to measure comparatively large distances.

The invention consists in a micrometer-calipers constructed with a pivoted straight-edge rule, whereby the calipers can be folded Very compactly when not in use.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 is a longitudinal elevation of my improved micrometer calipers, showing it adjusted for use. Fig. 2 is alike View, showing it folded. Fig. 3 is an end elevation-of the same.

In one end of the U-shaped frameAa screw, 13, is held,which is provided with a head, 0, the rim of which is divided into fifty parts. The pitch of the thread of the screw B is onetwentieth of an inch, and every revolution of the screw moves the screw one-twentieth of an inchlengthwise.

A rule or scale-bar, D, is pivoted to the side of the frame A at that end at which the head of the screw is. When the calipers is not in use, the rule D extends from one shank to the other of the frame A, the free end of the rule resting on a fiat ridge or projection, E, on that shank opposite the one to which the rule is pivoted. If the calipers is to be used, the pivoted rule D is swung outward to project from the end of the frame in the same direction as and parallel with the screw, as shown in Fig.

1. The distances that the screw travels longi tudinally can .be seen 011 the scale of the rule D. The dimension is thus given in one-twentieth of inches. As the rim of the head is divided into fifty parts, and as the pitch of the screw is one-twentieth of an inch, the screw will be moved longitudinally one-thousandth part of an inch for each subdivision of the rim of the head. By noting the number of subdivisions of the head 0 beyond the edge of the rule D the desired dimension will be obtained in twentieths of an inch and thousandths of an inch.

Having thus described my invention, I claim as new and desire to secure by Letters Patent-1 1. A micrometer-calipers constructed with a straight-edge rule pivoted to one end of the frame of the calipers, substantially as herein shown and described, and for the purpose set forth.

2. In a micrometer-calipers, the combination, with the U-shaped frame A, having a projection, E, of the screw B, and the straight-edge rule D, pivoted to one end of the said frame, substantially as herein shown and described, and for the purpose set forth.

LEOPOLD L. REMAOLE.

Witnesses:

OSCAR F. GUNZ, C. SEDGWIOK. 

